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.\"	@(#)fold.1	8.1 (Berkeley) 6/6/93
.\" $FreeBSD: src/usr.bin/fold/fold.1,v 1.12 2004/08/02 11:15:01 tjr Exp $
.\"
.Dd August 2, 2004
.Dt FOLD 1
.Os
.Sh NAME
.Nm fold
.Nd "fold long lines for finite width output device"
.Sh SYNOPSIS
.Nm
.Op Fl bs
.Op Fl w Ar width
.Op Ar
.Sh DESCRIPTION
The
.Nm
utility is a filter which folds the contents of the specified files,
or the standard input if no files are specified,
breaking the lines to have a maximum of 80 columns.
.Pp
The options are as follows:
.Bl -tag -width indent
.It Fl b
Count
.Ar width
in bytes rather than column positions.
.It Fl s
Fold line after the last blank character within the first
.Ar width
column positions (or bytes).
.It Fl w Ar width
Specify a line width to use instead of the default 80 columns.
.Ar Width
should be a multiple of 8 if tabs are present, or the tabs should
be expanded using
.Xr expand 1
before using
.Nm .
.El
.Sh ENVIRONMENT
The
.Ev LANG , LC_ALL
and
.Ev LC_CTYPE
environment variables affect the execution of
.Nm
as described in
.Xr environ 7 .
.Sh SEE ALSO
.Xr expand 1 ,
.Xr fmt 1
.Sh STANDARDS
The
.Nm
utility conforms to
.St -p1003.1-2001 .
.Sh BUGS
If underlining is present it may be messed up by folding.
